Investigating Behavior of Six Methods for Sediment Transport Capacity Estimation of Spatial-Temporal Soil Erosion
Estimation of sediment transport capacity (STC) plays a crucial role in simulating soil erosion using any physics-based models. In this research, we aim to investigate the pros and cons of six popular STC methods (namely, Shear velocity, Kilinc-Richardson (KR), Effective stream power, Slope and unit...
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MDPI AG
2021-11-01
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| author | Linh Nguyen Van Xuan-Hien Le Giang V. Nguyen Minho Yeon Sungho Jung Giha Lee |
| author_facet | Linh Nguyen Van Xuan-Hien Le Giang V. Nguyen Minho Yeon Sungho Jung Giha Lee |
| author_sort | Linh Nguyen Van |
| collection | DOAJ |
| description | Estimation of sediment transport capacity (STC) plays a crucial role in simulating soil erosion using any physics-based models. In this research, we aim to investigate the pros and cons of six popular STC methods (namely, Shear velocity, Kilinc-Richardson (KR), Effective stream power, Slope and unit discharge, Englund-Hansen (EH), and Unit stream power) for soil erosion/deposition simulation at watershed scales. An in-depth analysis was performed using the selected STC methods integrated into the Grid Surface Subsurface Hydrologic Analysis model for investigating the changes in morphology at spatial-temporal scales at the Cheoncheon watershed, South Korea, over three storm events. Conclusions were drawn as follows. (1) Due to the ability of the KR and EH methods to include an additional parameter (i.e., erodibility coefficient), they outperformed others by producing more accurate simulation results of sediment concentration predictions. The KR method also proved to be superior to the EH method when it showed a more suitable for sediment concentration simulations with a wide range of sediment size and forcing magnitude. (2) We further selected 2 STC methods among the 6 methods to deeply explore the spatial distribution of erosion/deposition. The overall results were more agreeable. For instance, the phenomenon of erosion mainly occurred upstream of watersheds with steep slopes and unbalanced initial sediment concentrations, whereas deposition typically appeared at locations with flat terrain (or along the mainstream). The EH method demonstrated the influence of topography (e.g., gradient slope) on accretionary erosion/deposition results more significantly than the KR method. The obtained results contribute a new understanding of rainfall-sediment-runoff processes and provide fundamental plans for soil conservation in watersheds. |
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| last_indexed | 2024-03-10T05:48:39Z |
| publishDate | 2021-11-01 |
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| series | Water |
| spelling | doaj.art-011e14d84e0b41c58a84c165bd7314f12023-11-22T21:54:35ZengMDPI AGWater2073-44412021-11-011321305410.3390/w13213054Investigating Behavior of Six Methods for Sediment Transport Capacity Estimation of Spatial-Temporal Soil ErosionLinh Nguyen Van0Xuan-Hien Le1Giang V. Nguyen2Minho Yeon3Sungho Jung4Giha Lee5Department of Advanced Science and Technology Convergence, Kyungpook National University, 2559 Gyeongsang-daero, Sangju 37224, KoreaDisaster Prevention Emergency Management Institute, Kyungpook National University, 2559 Gyeongsang-daero, Sangju 37224, KoreaDepartment of Advanced Science and Technology Convergence, Kyungpook National University, 2559 Gyeongsang-daero, Sangju 37224, KoreaDepartment of Advanced Science and Technology Convergence, Kyungpook National University, 2559 Gyeongsang-daero, Sangju 37224, KoreaDepartment of Advanced Science and Technology Convergence, Kyungpook National University, 2559 Gyeongsang-daero, Sangju 37224, KoreaDepartment of Advanced Science and Technology Convergence, Kyungpook National University, 2559 Gyeongsang-daero, Sangju 37224, KoreaEstimation of sediment transport capacity (STC) plays a crucial role in simulating soil erosion using any physics-based models. In this research, we aim to investigate the pros and cons of six popular STC methods (namely, Shear velocity, Kilinc-Richardson (KR), Effective stream power, Slope and unit discharge, Englund-Hansen (EH), and Unit stream power) for soil erosion/deposition simulation at watershed scales. An in-depth analysis was performed using the selected STC methods integrated into the Grid Surface Subsurface Hydrologic Analysis model for investigating the changes in morphology at spatial-temporal scales at the Cheoncheon watershed, South Korea, over three storm events. Conclusions were drawn as follows. (1) Due to the ability of the KR and EH methods to include an additional parameter (i.e., erodibility coefficient), they outperformed others by producing more accurate simulation results of sediment concentration predictions. The KR method also proved to be superior to the EH method when it showed a more suitable for sediment concentration simulations with a wide range of sediment size and forcing magnitude. (2) We further selected 2 STC methods among the 6 methods to deeply explore the spatial distribution of erosion/deposition. The overall results were more agreeable. For instance, the phenomenon of erosion mainly occurred upstream of watersheds with steep slopes and unbalanced initial sediment concentrations, whereas deposition typically appeared at locations with flat terrain (or along the mainstream). The EH method demonstrated the influence of topography (e.g., gradient slope) on accretionary erosion/deposition results more significantly than the KR method. The obtained results contribute a new understanding of rainfall-sediment-runoff processes and provide fundamental plans for soil conservation in watersheds.https://www.mdpi.com/2073-4441/13/21/3054sediment transport capacityrainfall-runofferosiondepositionGSSHA |
| spellingShingle | Linh Nguyen Van Xuan-Hien Le Giang V. Nguyen Minho Yeon Sungho Jung Giha Lee Investigating Behavior of Six Methods for Sediment Transport Capacity Estimation of Spatial-Temporal Soil Erosion Water sediment transport capacity rainfall-runoff erosion deposition GSSHA |
| title | Investigating Behavior of Six Methods for Sediment Transport Capacity Estimation of Spatial-Temporal Soil Erosion |
| title_full | Investigating Behavior of Six Methods for Sediment Transport Capacity Estimation of Spatial-Temporal Soil Erosion |
| title_fullStr | Investigating Behavior of Six Methods for Sediment Transport Capacity Estimation of Spatial-Temporal Soil Erosion |
| title_full_unstemmed | Investigating Behavior of Six Methods for Sediment Transport Capacity Estimation of Spatial-Temporal Soil Erosion |
| title_short | Investigating Behavior of Six Methods for Sediment Transport Capacity Estimation of Spatial-Temporal Soil Erosion |
| title_sort | investigating behavior of six methods for sediment transport capacity estimation of spatial temporal soil erosion |
| topic | sediment transport capacity rainfall-runoff erosion deposition GSSHA |
| url | https://www.mdpi.com/2073-4441/13/21/3054 |
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